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Chapter 2 Front Panel Operation RIGOL
User’s Guide for DSA700 Series
2-9
For more details, please refer to "Parameter Setting".
Full Span
Set the span of the analyzer to the maximum.
Zero Span
Set the span of the analyzer to 0 Hz. Both the start and stop frequencies will equal
the center frequency and the horizontal axis will denote time. The analyzer
measures the time domain characteristics of the amplitude of the corresponding
frequency point on the input signal.
Key Points:
As opposed to Non-zero span, the screen shows the time domain characteristics of
the fixed frequency component of the signal in zero span mode.
The following functions are invalid in Zero span mode:
FREQ: Peak->CF and Signal Track;
SPAN: Zoom In, Zoom Out and X Scale;
Marker->: Mkr->CF, Mkr->Step, Mkr->Start, Mkr->Stop, MkrΔ->CF and
MkrΔ->Span;
Marker Readout: Frequency, Period and 1/ΔTime (valid in Delta marker
type).
Zoom In
Set the span to half of its current value. At this point, the signal on the screen is
zoomed in to observe signal details.
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